Sunroof drain tube mounting arrangement

ABSTRACT

A vehicle mounting arrangement is provided for a vehicle having a sunroof with a sunroof drain tube and an inflatable airbag. The drain tube and the inflatable airbag are mounted to a vehicle roof rail of the vehicle. The vehicle mounting arrangement includes an inflatable airbag mounted to the vehicle roof rail. The inflatable airbag is expandable toward an interior side of the vehicle. A sunroof drain tube is pivotally mounted to the vehicle roof rail and positioned adjacent the inflatable airbag so that the drain tube is pivotally displaced upon expansion of the inflatable airbag.

This application is a continuation of U.S. patent application Ser. No.10/989,575, filed on Nov. 16, 2004, and claims priority of U.S.Provisional Application Ser. No. 60/583,677, filed Jun. 29, 2004, bothexpressly incorporated herein by reference.

BACKGROUND

The present disclosure relates to a drain tube mounting arrangement in avehicle and, more particularly, to the mounting of a sunroof drain tubeand positioning thereof relative to an adjacent side curtain airbag. Inone embodiment, a sunroof drain tube is pivotally mounted in a vehicleadjacent a side curtain airbag and will be described with particularreference thereto. It is to be appreciated, however, that the presentdisclosure may relate to other similar environments and applications.

Inflatable safety restraints such as airbags are often utilized in motorvehicles for their potential to reduce injuries and possibly fatalitiesto vehicle occupants that result from the vehicle being struck,colliding with another vehicle or object, or overturning. More recently,airbags have been employed as curtains within a vehicle and are oftenpositioned along sides of the passenger compartment of the vehicle tofurther improve the safety of vehicle occupants, particularly againstside impacts and roll-overs.

One type of airbag utilized along a side of a vehicle is a side curtainairbag. Conventional curtain airbags unfold or unroll downward toinflate beside an adjacent vehicle occupant to create a barrier betweenthe occupant and the portion of the vehicle defining a passengercompartment in which the occupant is carried. Often, curtain airbags aresized to hold relatively large volumes of inflation gas and are able toextend from a roof rail of a vehicle to at least below a window sill ofthe vehicle. As a result, these types of curtain airbags can include arelatively large amount of airbag material. Generally, this material isrolled or folded tightly into an elongated tubular bundle. When thecurtain airbag is deployed or inflated, the curtain unrolls or unfoldsalong a side of the passenger compartment of the vehicle, typicallyadjacent side windows and doors of the vehicle, thereby creating aninflatable barrier for the vehicle occupants.

Typically, side curtain airbags are mounted along a vehicle's side roofrail. When the curtain is inflated, it breaks through a cover, if acover is utilized, as inflation gas fills the curtain. In manyconventional mounting arrangements, the side curtain airbag is mountedto the vehicle's roof rail by a plurality of mounts, which can be boltsor other types of permanent fastening devices. Generally, the roof railsof a vehicle are relatively small and narrow for purposes of providingan appealing and spacious vehicle interior for the vehicle occupants.Thus, the area in which the inflatable curtain is installed and stored(when not being deployed) is relatively small and narrow.

Often, besides the inflatable curtain, a variety of other components areinstalled in and/or around the roof rail. These components compete forspace in this narrow area along the roof rail. Examples of suchcomponents include: hand grips, lighting fixtures, sun or moon roofbrackets, sunroof drain tubes, wiring, heating and ventilation controlsand/or ducts. All of these components require some mounting space. Theavailable mounting space is further constrained by the structure of thevehicle and by the common desire to make the passenger compartmentspacious and comfortable.

In addition to spatial constraints, another design issue relates tomounting arrangements of components that are positioned closely adjacentinflatable curtains. Specifically, components mounted closely adjacentinflatable curtains are desirably prevented from projecting into thepassenger compartment upon deployment of the side curtain airbag. Onesuch component is the sunroof drain tube which, when utilized in avehicle, often extends along a portion of a roof rail to which the sidecurtain airbag is mounted.

The drain tube is typically routed over the side curtain airbag whichreduces the likelihood of the drain tube projecting into the passengercompartment upon inflation of the side curtain airbag. However, in somevehicle designs, routing the drain tube over the side curtain airbag isnot feasible. Accordingly, any improvements to the mounting ofcomponents, such as a sunroof drain tube, adjacent the side curtainairbag are desirable, particularly those that decrease the likelihood ofsuch components being projected into the passenger compartment duringairbag deployment.

BRIEF SUMMARY

In accordance with one aspect, a vehicle mounting arrangement isprovided for a vehicle having a sunroof with a sunroof drain tube and aninflatable airbag. The drain tube and the inflatable airbag are mountedto a vehicle roof rail of the vehicle. More particularly, in accordancewith this aspect, the vehicle mounting arrangement includes aninflatable airbag mounted to the vehicle roof rail. The inflatableairbag is expandable toward an interior side of the vehicle. A sunroofdrain tube is pivotally mounted to the vehicle roof rail and positionedadjacent the inflatable airbag so that the drain tube is pivotallydisplaced upon expansion of the inflatable airbag.

In accordance with another aspect, a drain tube mounting arrangement ina vehicle is provided. More particularly, in accordance with thisaspect, an inflatable member is mounted to a vehicle roof rail and isexpandable away from the vehicle roof rail along a passenger compartmentof the vehicle. A conduit is pivotally mounted to the vehicle roof railalong the inflatable member so that upon deployment of the inflatablemember the conduit is pivotally moved toward a roof of the vehicle.

In accordance with yet another aspect, a vehicle having a frame isprovided. The vehicle includes a roof rail for supporting a roof over apassenger cabin and a side airbag mounted to the roof rail forselectively creating an inflatable barrier extending from the roof railalong the passenger cabin. More particularly, in accordance with thisaspect, the vehicle includes an elongated conduit extending along alength of the roof rail. A sling hingedly connects the conduit to theroof rail along an interior side of the side airbag.

In accordance with still yet another aspect, a sunroof drain tubemounting arrangement is provided. More particularly, in accordance withthis aspect, the mounting arrangement includes a curtain airbag mountedalong one side of a vehicle roof. A sunroof drain tube is pivotallymounted along the one side of the vehicle roof adjacent an interior sideof the curtain airbag so that the drain tube is pivotally directedtoward the vehicle roof and away from occupants carried beneath the roofupon deployment of the curtain airbag.

BRIEF DESCRIPTION OF THE DRAWINGS

The one or more embodiments may take form in various components andarrangements of components, and in various steps and arrangements ofsteps. The drawings are only for purposes of illustrating the one ormore embodiments and are not to be construed as limiting the invention.

FIG. 1 is a schematic partial perspective view of a vehicle having asunroof drain tube mounted to a vehicle roof rail adjacent a sideairbag.

FIG. 2 is a schematic cross-sectional view of the drain tube and sideairbag taken along the line 2-2 of FIG. 1.

FIG. 3 is a schematic cross-sectional view of the drain tube and sideairbag of FIG. 2 shown with the airbag deployed.

FIG. 4 is a schematic partial perspective view of the drain tube andside airbag of FIG. 1.

DETAILED DESCRIPTION

Referring now to the drawings wherein the showings are for purposes ofillustrating one or more embodiments only and not for purposes oflimiting the same, with reference to FIGS. 1-4, a vehicle mountingarrangement is shown in a vehicle V and generally designated byreference numeral 10. The mounting arrangement 10 includes an elongatedconduit or drain tube 12 mounted along or adjacent an inflatable memberor airbag 14. The vehicle V includes a frame 16 having a pair of opposedside roof rails (only roof rail 18 shown) supporting a vehicle roof 22over a passenger compartment or cabin C of the vehicle V. In oneembodiment, the roof 22 defines an opening 24 for a sunroof 26 or otherlike device and the drain tube 12 is a sunroof drain tube.

An area or gutter 28 around the opening 24 collects drainage such asrain water and prevents the drainage from passing into the passengercabin C. As is well known, the drain tube 12 is provided for receivingthe collected drainage and directing the received drainage away from theopening 24 and the area 28. In one embodiment, the drain tube 12 isfluidly connected to an aperture 30 in the gutter 28 and extends alongone of the side roof rails 18 and along the inflatable airbag 14. Thedrain tube 12 has an inlet portion 12a for receiving water drainage fromthe area 28 and an outlet portion (not shown) for draining or releasingreceived water drainage to the environment or ambient. As will bedescribed in more detail below, the drain tube 12 and the inflatableairbag 14 are mounted to the vehicle roof rail 18 of the vehicle V.

Generally, the inflatable airbag 14 is a side curtain airbag stored andmounted along the side roof rail 18 for selectively creating aninflatable barrier extending from the roof rail along the passengercabin C. Alternatively, the airbag 14 could instead be a flag-typebarrier that is not inflated but deployed similarly to a side curtainairbag. In one embodiment, the side curtain airbag 14 is sized toinflate and substantially cover at least a side window 32 of the vehicleV and, optionally, all or a portion of the door 34 over which thecurtain airbag 14 is mounted. While the curtain airbag 14 isappropriately sized to cover a large area, the roof rail 18 is oftenlimited in size to provide for a more spacious interior (i.e., passengercabin C) and to accommodate the side windows, including side window 32,being larger in size.

As is known, the curtain airbag 14 is folded, rolled or otherwiseminimized in size for mounting along the roof rail 18. Preferably, thecurtain airbag 14 is bundled so that its dimensions are similar orsmaller than those of the roof rail 18. The curtain airbag 14 isoptionally held together in a housing or tubular sock 36 made oflightweight flexible semi-elastic material. The sock 36 is configured tobreak open longitudinally when the inflatable curtain 14 is deployed,i.e., inflated such as during a collision.

As is known to those skilled in the art, the curtain airbag 14 isoperatively mounted to the side rail 18 so that the airbag 14 ismaintained in a preferred position and orientation should the curtain 14be deployed. In the illustrated embodiment, the roof rail 18 includes aportion of the frame 16 between the vehicle roof 22 and the door 34, andfurther includes a reinforcing member 38 connected, such as by welding,to the frame 16. It is to be appreciated by those skilled in the artthat the roof rail could be constructed in a variety of configurationsand is not to be limited by that shown and described herein. Due atleast in part to the positioning of the airbag 14, during deployment,the curtain airbag 14 expands toward an interior side of the vehicle(i.e., away from the roof rail 18 and into the passenger cabin C) anddownward from the roof rail 18 alongside the window 32 of the vehicle Vand along the passenger compartment C defined thereby.

In the illustrated embodiment, the undeployed airbag 14 is mountedagainst or adjacent the reinforcement member 38 and the drain tube 12 ismounted against or adjacent the side airbag 14. A trim piece 40 isoptionally mounted to the roof rail 18 to cover the airbag 14 and thedrain tube 12. More specifically, the drain tube 12 is pivotally mountedto the roof rail 18 (and, specifically, the reinforcement member 38) andpositioned adjacent the curtain airbag 14 to extend along a length ofthe roof rail 18. The pivotal mounting of the drain tube 12 and thepositioning of the drain tube relative to the curtain airbag 14 causesthe drain tube 12 to be pivotally displaced upon inflation and expansionof the curtain airbag 14 (shown in FIG. 3). More particularly, the draintube 12 is pivotally moved upward about the vehicle roof rail 18 towardthe roof 22, and away from the passenger cabin C, upon expansion of thecurtain airbag 14 thereby avoiding being projected into the passengercabin C.

In one embodiment, the mounting arrangement 10, also referred to hereinas a drain tube mounting arrangement, includes a sling 42 that pivotallyconnects or mounts the drain tube 12 to the roof rail 18. The sling 42is mounted to the roof rail 18 and, specifically, the reinforcing member38 via suitable fasteners 44 to carry and hingedly support the draintube 12 adjacent, and preferably closely adjacent, the curtain airbag14. More specifically, the sling 42 carries the drain tube 12 so thatthe drain tube 12 is mounted toward the interior side of the vehicle Vrelative to the inflatable airbag, i.e., the drain tube 12 is mountedinwardly from the curtain airbag 14 in the direction of the passengercompartment C and along an interior side of the curtain airbag 14. Thesling 42 enables the drain tube 12 to be moveable toward the roof 22upon deployment of the curtain airbag 14 while remaining connected tothe roof rail 18 after deployment of the curtain airbag.

In one embodiment, the sling is a canvas sling. As used herein, canvasis intended to include all flexible material sheets suitable formounting the drain tube 12 as described herein. The sling 42 includes asecured end 46 having tab portions 48 that are connected to the roofrail 18 by the suitable fasteners 44, which can be screws for example,and a looped end 50 that carries the drain tube 12. As alreadyindicated, the sling 42 pivotally mounts the drain tube 12 adjacent thecurtain airbag 14. Upon deployment of the airbag 14, the sling 42 isforced pivotally about the roof rail 18 by the expansion of the airbag14 in the direction of the sling 42. When forced to pivotally move, thesling 42 carries the drain tube 12 upward away from the passengercompartment C in which vehicle occupants may be present and directs thetube 12 toward the roof 22 of the vehicle.

The exemplary embodiment has been described with reference to theembodiments. Obviously, modifications and alterations will occur toothers upon reading and understanding the preceding detaileddescription. It is intended that the exemplary embodiment be construedas including all such modifications and alterations insofar as they comewithin the scope of the appended claims or the equivalents thereof.

1. A drain tube mounting arrangement in a vehicle, comprising: an inflatable member mounted to a vehicle roof rail and expandable away from said vehicle roof rail along a passenger compartment of said vehicle; and a liquid drain tube defining a fluid flow path therethrough pivotally mounted to said vehicle roof rail along said inflatable member so that upon deployment of said inflatable member said drain tube is pivotally moved to allow said inflatable member to pass thereby with said fluid flow path remaining intact so as to continue to allow drainage through said drain tube to flow along said drain tube past said inflatable member.
 2. The vehicle mounting arrangement of claim 1 wherein said inflatable member is a side curtain airbag.
 3. The vehicle mounting arrangement of claim 1 further including at least one mount connecting said inflatable member to said vehicle roof rail.
 4. The vehicle mounting arrangement of claim 1 further including: a sling hingedly supporting said drain tube from said vehicle roof rail adjacent said inflatable member.
 5. The vehicle mounting arrangement of claim 1 wherein said drain tube is pivotally moved upward about said vehicle roof rail upon expansion of said inflatable member so as to avoid being projected into a passenger compartment of said vehicle.
 6. The vehicle mounting arrangement of claim 1 wherein said sunroof drain tube is mounted toward the interior side of the said vehicle relative to said inflatable member.
 7. The vehicle mounting arrangement of claim 1 wherein said drain tube has an axially extending section pivotally mounted to said vehicle roof rail and positioned adjacent said inflatable member so that said axially extending section is pivotally displaced about an axis generally parallel to said axially extending section upon expansion of said inflatable member.
 8. The vehicle mounting arrangement of claim 1 further including: a sling mounted to said vehicle roof rail and carrying said drain tube closely adjacent said inflatable member, said sling enabling said drain tube to move toward a roof of said vehicle upon deployment of said inflatable member.
 9. The vehicle mounting arrangement of claim 1 wherein said drain tube is a sunroof drain tube having an inlet for receiving water drainage from an area around a sunroof of said vehicle and an outlet for draining said water drainage to ambient.
 10. The vehicle mounting arrangement of claim 4 wherein said sling is a canvas sling having a secured end connected to said roof rail by fasteners and a looped end for carrying said drain tube.
 11. The vehicle mounting arrangement of claim 10 wherein said sling is positioned between two mounts that secure said inflatable member to the roof rail.
 12. A sunroof drain tube mounting arrangement, comprising: a curtain airbag mounted along one side of a vehicle roof; and a sunroof drain tube pivotally mounted along said one side of said vehicle roof adjacent an interior side of said curtain airbag so that said drain tube is pivotally directed toward said vehicle roof and away from occupants carried beneath said roof upon deployment of said curtain airbag, said sunroof drain tube defining a fluid flow path therethrough and being pivotally mounted along said one side of said vehicle roof such that said fluid flow path remains intact when said drain tube is pivotally moved upon deployment of said curtain airbag.
 13. The sunroof drain tube mounting arrangement of claim 12 wherein said sunroof drain tube has an axial length portion that is pivotally mounted along said one side of said vehicle roof such that said axial length portion pivotally moves about an axis generally parallel to said axial length portion upon deployment of said curtain airbag.
 14. The sunroof drain tube mounting arrangement of claim 12 wherein said drain tube and said curtain airbag are mounted to a vehicle roof rail of the roof and said drain tube is pivotally moved upward about said vehicle roof rail upon expansion of said curtain airbag so as to avoid being projected into a passenger compartment of said vehicle.
 15. The sunroof drain tube mounting arrangement of claim 14 further including: a sling pivotally connecting said sunroof drain tube to the vehicle roof rail.
 16. The sunroof drain tube mounting arrangement of claim 14 further including: a canvas sling mounted to the vehicle roof rail and carrying said drain tube adjacent said curtain airbag.
 17. The sunroof drain tube mounting arrangement of claim 12 wherein said sunroof drain tube has an inlet for receiving water drainage from an area around a sunroof of said vehicle and an outlet for draining said water drainage to ambient.
 18. A method for mounting a sunroof drain tube in a vehicle having a sunroof, comprising: pivotally mounting a sunroof drain tube to a vehicle roof rail of the vehicle; and positioning said sunroof drain tube adjacent an inflatable airbag on a side thereof so that said sunroof drain tube is pivotally displaced upon expansion of said inflatable airbag toward an interior side of the vehicle.
 19. The method of claim 18 wherein pivotally mounting said sunroof drain tube includes supporting said drain tube in a sling hingedly mounted to said roof rail adjacent said inflatable airbag.
 20. The method of claim 18 further including: deploying said airbag and pivotally mounting said sunroof drain tube by said airbag being deployed. 